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made root note address individually testable

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This commit is contained in:
William Falcon
2019-07-24 18:53:12 -04:00
parent 53a0b9f365
commit ccd4018dd9
1 changed files with 5 additions and 4 deletions
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pytorch_lightning/models/trainer.py
+5 -4
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@@ -556,14 +556,15 @@ class Trainer(TrainerIO):
port = 12910
os.environ['MASTER_PORT'] = f'{port}'
root_node = self.__resolve_root_node_address()
# figure out the root node addr
root_node = os.environ['SLURM_NODELIST'].split(' ')[0]
root_node = self.resolve_root_node_address(root_node)
os.environ['MASTER_ADDR'] = root_node
dist.init_process_group("nccl", rank=self.proc_rank, world_size=self.world_size)
def __resolve_root_node_address(self):
def resolve_root_node_address(self, root_node):
try:
root_node = os.environ['SLURM_NODELIST'].split(' ')[0]
if '[' in root_node:
name = root_node.split('[')[0]
number = root_node.split(',')[0]